LXR linux/arch/arm/mach-omap2/dsp.c

   1/*
   2 * TI's OMAP DSP platform device registration
   3 *
   4 * Copyright (C) 2005-2006 Texas Instruments, Inc.
   5 * Copyright (C) 2009 Nokia Corporation
   6 *
   7 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as
  11 * published by the Free Software Foundation.
  12 */
  13
  14/*
  15 * XXX The function pointers to the PRM/CM functions are incorrect and
  16 * should be removed.  No device driver should be changing PRM/CM bits
  17 * directly; that's a layering violation -- those bits are the responsibility
  18 * of the OMAP PM core code.
  19 */
  20
  21#include <linux/platform_device.h>
  22#include "cm2xxx_3xxx.h"
  23#include "prm2xxx_3xxx.h"
  24#ifdef CONFIG_BRIDGE_DVFS
  25#include <plat/omap-pm.h>
  26#endif
  27
  28#include <plat/dsp.h>
  29
  30extern phys_addr_t omap_dsp_get_mempool_base(void);
  31
  32static struct platform_device *omap_dsp_pdev;
  33
  34static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
  35#ifdef CONFIG_BRIDGE_DVFS
  36        .dsp_set_min_opp = omap_pm_dsp_set_min_opp,
  37        .dsp_get_opp = omap_pm_dsp_get_opp,
  38        .cpu_set_freq = omap_pm_cpu_set_freq,
  39        .cpu_get_freq = omap_pm_cpu_get_freq,
  40#endif
  41        .dsp_prm_read = omap2_prm_read_mod_reg,
  42        .dsp_prm_write = omap2_prm_write_mod_reg,
  43        .dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
  44        .dsp_cm_read = omap2_cm_read_mod_reg,
  45        .dsp_cm_write = omap2_cm_write_mod_reg,
  46        .dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
  47};
  48
  49static int __init omap_dsp_init(void)
  50{
  51        struct platform_device *pdev;
  52        int err = -ENOMEM;
  53        struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
  54
  55        pdata->phys_mempool_base = omap_dsp_get_mempool_base();
  56
  57        if (pdata->phys_mempool_base) {
  58                pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
  59                pr_info("%s: %x bytes @ %x\n", __func__,
  60                        pdata->phys_mempool_size, pdata->phys_mempool_base);
  61        }
  62
  63        pdev = platform_device_alloc("omap-dsp", -1);
  64        if (!pdev)
  65                goto err_out;
  66
  67        err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
  68        if (err)
  69                goto err_out;
  70
  71        err = platform_device_add(pdev);
  72        if (err)
  73                goto err_out;
  74
  75        omap_dsp_pdev = pdev;
  76        return 0;
  77
  78err_out:
  79        platform_device_put(pdev);
  80        return err;
  81}
  82module_init(omap_dsp_init);
  83
  84static void __exit omap_dsp_exit(void)
  85{
  86        platform_device_unregister(omap_dsp_pdev);
  87}
  88module_exit(omap_dsp_exit);
  89
  90MODULE_AUTHOR("Hiroshi DOYU");
  91MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
  92MODULE_LICENSE("GPL");
  93